#                                                                    -*-perl-*-
$description = "Test the .INCLUDE_DIRS special variable.";

$details = "";

use Cwd;

$dir = cwd;
$dir =~ s,.*/([^/]+)$,../$1,;

# Test #1: The content of .INCLUDE_DIRS depends on the platform for which
#          make was built. What we know for sure is that it shouldn't be
#          empty.
#
run_make_test('
ifeq ($(.INCLUDE_DIRS),)
$(warning .INCLUDE_DIRS is empty)
endif

.PHONY: all
all:;@:
',
              '', '');


# Test #2: Make sure -I paths end up in .INCLUDE_DIRS.
#
run_make_test('
ifeq ($(dir),)
$(warning dir is empty)
endif

ifeq ($(filter $(dir),$(.INCLUDE_DIRS)),)
$(warning .INCLUDE_DIRS does not contain $(dir): $(.INCLUDE_DIRS))
endif

.PHONY: all
all:;@:
',
              "-I$dir dir=$dir", '');

# Find the default .INCLUDE_DIRS
create_file('defaultdirs.mk', "\$(info \$(.INCLUDE_DIRS))\nall:;\@:\n");
my $cmd = subst_make_string("#MAKEPATH# -f defaultdirs.mk");
my @dirs = `$cmd`;
my $dirs = $dirs[0];
chomp $dirs;
unlink('defaultdirs.mk');

run_make_test("
ifneq (\$(.INCLUDE_DIRS),$dirs)
\$(warning Mismatched \$(.INCLUDE_DIRS) != $dirs)
endif
all:;\@:
",
              '', '');

# Verify that -I- disables content from .INCLUDE_DIRS

run_make_test("
ifneq (\$(.INCLUDE_DIRS),)
\$(warning Mismatched \$(.INCLUDE_DIRS) != )
endif
all:;\@:
",
              '-I-', '');

# Prefix -I dirs to the front
mkdir('somedir', 0777);

run_make_test("
ifneq (\$(.INCLUDE_DIRS),somedir $dirs)
\$(warning Mismatched \$(.INCLUDE_DIRS) != somedir $dirs)
endif
all:;\@:
",
              '-I somedir', '');

# Verify .INCLUDE_DIRS contains files after -I-

run_make_test("
ifneq (\$(.INCLUDE_DIRS),somedir)
\$(warning Mismatched \$(.INCLUDE_DIRS) != somedir)
endif
all:;\@:
",
              '-I - -I somedir', '');

rmdir('somedir');

# This tells the test driver that the perl test script executed properly.
1;
